SUPERCONDUCTIVE WIRE MATERIAL, SUPERCONDUCTIVE MULTI-CONDUCTOR WIRE USING THE SAME AND METHOD FOR PRODUCING THE SAME

摘要

An oxide superconductive wire material which has an oxide superconductive article and a coating metal covering the oxide superconductive article, characterized in that the material of the above coating metal exhibits a strain percentage at break of 30 % or more in a stress-strain characteristic test. The above superconductive wire material exhibits a high critical curre nt density and is less prone to splitting vertically or breaking in the production process therefor.